1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
|
/**
* @file media_plugin_base.cpp
* @brief Media plugin base class for LLMedia API plugin system
*
* All plugins should be a subclass of MediaPluginBase.
*
* @cond
* $LicenseInfo:firstyear=2008&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
* @endcond
*/
#include "linden_common.h"
#include "media_plugin_base.h"
// TODO: Make sure that the only symbol exported from this library is LLPluginInitEntryPoint
////////////////////////////////////////////////////////////////////////////////
/// Media plugin constructor.
///
/// @param[in] host_send_func Function for sending messages from plugin to plugin loader shell
/// @param[in] host_user_data Message data for messages from plugin to plugin loader shell
MediaPluginBase::MediaPluginBase(
LLPluginInstance::sendMessageFunction host_send_func,
void *host_user_data )
{
mHostSendFunction = host_send_func;
mHostUserData = host_user_data;
mDeleteMe = false;
mPixels = 0;
mWidth = 0;
mHeight = 0;
mTextureWidth = 0;
mTextureHeight = 0;
mDepth = 0;
mStatus = STATUS_NONE;
}
/**
* Converts current media status enum value into string (STATUS_LOADING into "loading", etc.)
*
* @return Media status string ("loading", "playing", "paused", etc)
*
*/
std::string MediaPluginBase::statusString()
{
std::string result;
switch(mStatus)
{
case STATUS_LOADING: result = "loading"; break;
case STATUS_LOADED: result = "loaded"; break;
case STATUS_ERROR: result = "error"; break;
case STATUS_PLAYING: result = "playing"; break;
case STATUS_PAUSED: result = "paused"; break;
case STATUS_DONE: result = "done"; break;
default:
// keep the empty string
break;
}
return result;
}
/**
* Set media status.
*
* @param[in] status Media status (STATUS_LOADING, STATUS_PLAYING, STATUS_PAUSED, etc)
*
*/
void MediaPluginBase::setStatus(EStatus status)
{
if(mStatus != status)
{
mStatus = status;
sendStatus();
}
}
/**
* Receive message from plugin loader shell.
*
* @param[in] message_string Message string
* @param[in] user_data Message data
*
*/
void MediaPluginBase::staticReceiveMessage(const char *message_string, void **user_data)
{
MediaPluginBase *self = (MediaPluginBase*)*user_data;
if(self != NULL)
{
self->receiveMessage(message_string);
// If the plugin has processed the delete message, delete it.
if(self->mDeleteMe)
{
delete self;
*user_data = NULL;
}
}
}
/**
* Send message to plugin loader shell.
*
* @param[in] message Message data being sent to plugin loader shell
*
*/
void MediaPluginBase::sendMessage(const LLPluginMessage &message)
{
std::string output = message.generate();
mHostSendFunction(output.c_str(), &mHostUserData);
}
/**
* Notifies plugin loader shell that part of display area needs to be redrawn.
*
* @param[in] left Left X coordinate of area to redraw (0,0 is at top left corner)
* @param[in] top Top Y coordinate of area to redraw (0,0 is at top left corner)
* @param[in] right Right X-coordinate of area to redraw (0,0 is at top left corner)
* @param[in] bottom Bottom Y-coordinate of area to redraw (0,0 is at top left corner)
*
*/
void MediaPluginBase::setDirty(int left, int top, int right, int bottom)
{
LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_MEDIA, "updated");
message.setValueS32("left", left);
message.setValueS32("top", top);
message.setValueS32("right", right);
message.setValueS32("bottom", bottom);
sendMessage(message);
}
/**
* Sends "media_status" message to plugin loader shell ("loading", "playing", "paused", etc.)
*
*/
void MediaPluginBase::sendStatus()
{
LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_MEDIA, "media_status");
message.setValue("status", statusString());
sendMessage(message);
}
#if LL_LINUX
size_t SymbolGrabber::registerSymbol( SymbolToGrab aSymbol )
{
gSymbolsToGrab.emplace_back(aSymbol);
return gSymbolsToGrab.size();
}
bool SymbolGrabber::grabSymbols(std::vector< std::string > const &aDSONames)
{
std::cerr << "SYMBOLS: " << gSymbolsToGrab.size() << std::endl;
if (sSymsGrabbed)
return true;
//attempt to load the shared libraries
apr_pool_create(&sSymPADSOMemoryPool, nullptr);
for( std::vector< std::string >::const_iterator itr = aDSONames.begin(); itr != aDSONames.end(); ++itr )
{
apr_dso_handle_t *pDSO(NULL);
std::string strDSO{ *itr };
if( APR_SUCCESS == apr_dso_load( &pDSO, strDSO.c_str(), sSymPADSOMemoryPool ))
sLoadedLibraries.push_back( pDSO );
for( auto i = 0; i < gSymbolsToGrab.size(); ++i )
{
if( !*gSymbolsToGrab[i].mPPFunc )
apr_dso_sym( gSymbolsToGrab[i].mPPFunc, pDSO, gSymbolsToGrab[i].mName );
}
}
bool sym_error = false;
for( auto i = 0; i < gSymbolsToGrab.size(); ++i )
{
if( gSymbolsToGrab[ i ].mRequired && ! *gSymbolsToGrab[ i ].mPPFunc )
sym_error = true;
}
sSymsGrabbed = !sym_error;
return sSymsGrabbed;
}
void SymbolGrabber::ungrabSymbols()
{
}
#endif
#if LL_WINDOWS
# define LLSYMEXPORT __declspec(dllexport)
#elif LL_LINUX
# define LLSYMEXPORT __attribute__ ((visibility("default")))
#else
# define LLSYMEXPORT /**/
#endif
extern "C"
{
LLSYMEXPORT int LLPluginInitEntryPoint(LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data, LLPluginInstance::sendMessageFunction *plugin_send_func, void **plugin_user_data);
}
/**
* Plugin initialization and entry point. Establishes communication channel for messages between plugin and plugin loader shell. TODO:DOC - Please check!
*
* @param[in] host_send_func Function for sending messages from plugin to plugin loader shell
* @param[in] host_user_data Message data for messages from plugin to plugin loader shell
* @param[out] plugin_send_func Function for plugin to receive messages from plugin loader shell
* @param[out] plugin_user_data Pointer to plugin instance
*
* @return int, where 0=success
*
*/
LLSYMEXPORT int
LLPluginInitEntryPoint(LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data, LLPluginInstance::sendMessageFunction *plugin_send_func, void **plugin_user_data)
{
return init_media_plugin(host_send_func, host_user_data, plugin_send_func, plugin_user_data);
}
#ifdef WIN32
int WINAPI DllEntryPoint( HINSTANCE hInstance, unsigned long reason, void* params )
{
return 1;
}
#endif
|
